Lululemon Sues Costco Over Alleged 'Copycat' Athleisure Wear – A Battle for Brand Integrity?

2025-07-01
Lululemon Sues Costco Over Alleged 'Copycat' Athleisure Wear – A Battle for Brand Integrity?
The Associated Press

Lululemon Athletica, the renowned yoga and athleisure wear brand, has taken legal action against Costco Wholesale Corporation, alleging the retail giant is selling knock-off versions of its popular products. The lawsuit, filed in the U.S. District Court for the District of Delaware, accuses Costco of deceptively marketing and selling apparel that closely resembles Lululemon's designs, potentially misleading customers and damaging the brand's reputation.

At the heart of the dispute are several items, including a hooded sweatshirt, leggings, and a multi-colored jacket, all sold under Costco's Kirkland Signature brand. Lululemon claims these items are 'dupes' – short for duplicates – designed to capitalize on Lululemon's established brand recognition and loyal customer base. The lawsuit asserts that the similarities between the products are not coincidental but rather a deliberate attempt to mimic Lululemon’s signature styles and features.

“We have invested significant time, resources, and capital in designing our innovative and high-quality athletic apparel, and we take protecting our intellectual property very seriously,” stated a Lululemon spokesperson. “Costco’s actions are a clear infringement on our designs and trademarks, and we will vigorously defend our brand against these unfair practices.”

The Lawsuit's Claims: Design Patents and Trademark Infringement

Lululemon's lawsuit isn’t just about aesthetic similarities. The company is alleging both design patent infringement and trademark infringement. Design patents protect the unique visual appearance of a product, while trademarks protect brand names, logos, and other identifying symbols. Lululemon argues that Costco’s Kirkland Signature apparel infringes on both, creating confusion among consumers who may believe they are purchasing genuine Lululemon products.

The lawsuit seeks an injunction to stop Costco from selling the allegedly infringing products, as well as monetary damages to compensate Lululemon for its losses and the harm to its brand reputation. The legal battle could have significant implications for the athleisure market, setting a precedent for how brands protect their designs and trademarks against copycats.

Costco's Response: Anticipated Defense

While Costco has not yet issued a formal public statement regarding the lawsuit, legal experts anticipate the company will argue that its Kirkland Signature apparel is sufficiently different from Lululemon’s designs to avoid infringement. They may also contend that the similarities are due to common design elements in the athleisure market.

The Bigger Picture: Brand Protection in a Competitive Market

This lawsuit highlights the growing challenges brands face in protecting their intellectual property in a highly competitive market. As consumers increasingly demand affordable alternatives, companies like Lululemon must be vigilant in defending their designs and brand identity. The outcome of this legal battle will be closely watched by the entire athleisure industry and could shape the future of brand protection strategies.

What’s next? The case is expected to proceed through the courts, with potential for settlement negotiations or a full trial. Regardless of the outcome, this legal action underscores the importance of brand integrity and the lengths companies will go to protect their reputation and market share.

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